https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116931
Bug ID: 116931
Summary: False "duplicate 'const'" errors when typedefs used on
pointer types in function definitions
Product: gcc
Version: 13.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mattreecebentley at gmail dot com
Target Milestone: ---
Created attachment 59263
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59263&action=edit
Preprocessed file of bug demonstration.
This bug is problematic for scenarios where the dev is obtaining a pointer type
from the allocator eg. std::allocator_traits<some_type>::pointer,
but will show up anywhere typedefs are used for pointer types.
In short, const int * const works, const int_pointer const doesn't under GCC.
the exact version of GCC:
13.2.0
the system type:
x86_64-w64-mingw32, windows, x64
Configured with:
../src/configure --enable-languages=c,c++ --build=x86_64-w64-mingw32
--host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --disable-multilib
--prefix=/e/temp/gcc/dest --with-sysroot=/e/temp/gcc/dest
--disable-libstdcxx-pch --disable-libstdcxx-verbose --disable-nls
--disable-shared --disable-win32-registry --enable-threads=posix
--enable-libgomp --with-zstd=/c/mingw
the complete command line that triggers the bug:
C:/programming/libraries/nuwen/bin/g++.exe -c
"C:/programming/workspaces/bugreport/bugreport/bug_report.cpp" -g -Wall
-save-temps -o build-Debug/bug_report.cpp.o -I. -I.
the compiler output (error messages, warnings, etc.):
C:/programming/workspaces/bugreport/bugreport/bug_report.cpp:3:37: error:
duplicate 'const'
3 | int test_fail(const integer_pointer const p)
| ^~~~~
| -----
